TFX is the next generation of TRUGLO's award winning TFO handgun sights. We listened to customers, and made TFX sights more company than ever with a longer sight radius for tighter groupings. We encased the aiming elements inside a virtually indestructible chemical and shock resistant capsule. All of the CNC-machined steel is protected with a rust proof Fortress Finish. There is even a highly visible white ring surrounding the front fiber to make it even more visible. TFX sights will amaze even the most discriminant shooters..